Sustainable livelihoods and forest resers: Acase study of the cotupeople in bhalee commune, Tay Giang district, Quang Nam province

Drum occupation in red river delta (case study of Doi Tam drum village, Doi Son commune, Duy Tien district, Ha Nam province) = nghề làm trống ở đồng bằng sông Hồng

... internet, the writer has selected, systemize them to present her specific idea in the thesis of Drum occupation in red river delta (case study of Doi Tam drum village, Doi Son commune, Duy Tien ... events of the country as well as people’s lives in other regions The researches project of drum occupation in Red River delta (case study of Doi Dam drum village, Doi Son commune, Duy Tien district, ... factors of drums, types of drums and its meaning in the lives of Doi Tam people * Scope of the study: Thesis on traditional and modern products of Doi Tam village (Doi Son commune, Duy Tien district,...

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A study of the flow in an s shaped duct 1

... performance of S- shaped ducts are thus a reduction in flow distortion at the duct exits, maximizing the flow rate and hence minimising the total pressure losses and elimination of flow separation ... exist in the flow visualisation of Mees et al (19 9 6a) and Wang and Yang (2005) and these are reproduced in Fig 1. 4 and 1. 5 respectively In Fig 1. 4, the time series flow visualisation shows the ... known data from Taylor et al (19 8 2a) and Sugiyama et al (19 97) and an analysis of the experimental errors is discussed 13 Radial pressure gradient and centrifugal force play important roles in flow...

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A study of the flow in an s shaped duct 2

... diffuser was connected to an axial fan, using a flexible canvas tube to minimise vibrations from the fan transmitted upstream to the test section The uncertainty in the spatial measurement and probe ... visualisation can be conducted and viewed from the side and the top The coordinate system used in this experiment is shown in Fig 2. 3 and its origin is at the center of the inlet plane of the S- duct, ... vertical side walls are labeled as “Near-side” and “Far-side” walls and these names continue onto the second bend despite the reverse in bend direction The internal dimensions of the square cross-sectioned...

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A study of the flow in an s shaped duct 3

... plotted against (s/ SO) 3. 3 .3. 2 Circular and Square Cross-sectioned S- shaped Duct Applying the same idea to the side wall CP data for flows in circular and square cross sectioned S- shaped ducts, the ... for all the flow cases, was computed and as before these results are shown as plots of (s/ SO) versus (s/ SO) and compared to those when no VGs are installed The results from TS 1, TS and TS at the ... S- ducts are discussed 3. 3 .3 Collapsed Curves of Ω (s/ SO) Versus (s/ SO) 3. 3 .3. 1 Circular and Square Cross-sectioned 90OCurved Ducts Fig 3. 5 (a) and (b) show the variation of (s/ SO) with (s/ SO) for flows...

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A study of the flow in an s shaped duct 4

... boundary layer thickness, measured using a single hot-wire at a flow speed of 15 m /s, was 7.5 mm (or 0.05D) The side wall Cp was measured using the Scanivalve system and the total pressure and ... radial co-ordinate directed towards the centre of curvature (same as y axis at the exit plane of the duct) , z = the vertical co-ordinate and = the turning angle of a bend measured in radians The ... cross sectioned S- shaped ducts of large curvature and at Re = 4. 73x1 04 and 1 .47 x105 have been investigated experimentally in detail Surface pressure measurements and flow visualization indicated...

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A study of the flow in an s shaped duct 5

... Chapter Fig 5. 2 shows the internal planes within the S- duct where measurements were taken With the inlet plane denoted as Plane and the exit plane as Plane 9, the remaining Planes to are distributed ... at equal angular intervals along the S- duct test section Transverse slots along each plane were cut on the top wall of the S- duct so that the cobra probe can be inserted into the duct for measurement ... vortices along the second bend of the S- duct and the difference in inlet boundary layer thickness The first two reasons were addressed in Chapter and the final reason is addressed in the present Chapter...

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